Clamp.



W. A. RICHARDSON. CLAMP. APPLICATlON FILED DEC. 2.19m.

Patented Oct. 16, 1917.

WILLIAM A. mcniannson; or nDwARnsv-ILLn, "ILLIno'Is; ass-rsnon TO RICHWIN' MANUFACTURING ooI/IPAIIY, or GI-IIGAGO,ILLINOIS;'A1C0RPORATI0N*GF ILLIIIoIs.

. GLAME;

Specification of Batters-Patent." =TPEtQni ed"ci f-1 6, 191 7,

' 'Application filed December 2, 1916. Seria1 1io. 134,673.

T 0 all'wlwm it may concern Be it known that I, WILLIAM A. RICHARD- soN, a citizen of the United States, residing at Edwardsville, in the county of Madison. and State of Illinois, have invented certain new and useful Improvements in Clamps, of which the following is a specification.

My invention consists of an improvement in clamps for holding straps, cords, ropes, etc, and consists of a frame formed of sheet or plate metal having at one side or edge a bent up bearing and retaining flange and a pivotally mounted locking dog, so located with relation to the flange that when a flexible element is inserted between these parts, it will be gripped and positively held during continuance of pulling strain.

Preferred forms of the invention are shown in the drawings, in which Figure 1 is a view of the device in edge elevation.

Fig. 2 is a face view partly broken away, on the line II, II, of Fig. 1.

Fig. 3 is a view similar to Fig. 2, showing a modified construction.

Fig. f is an edge view of Fig. 3.

The supporting base or frame is preferably made of sheet or plate metal having a main back portion 2 bent forwardly at the bottom roviding abearing base 3 and turned up at t e edge providing a retaining lip 4:. Base 3 is extended at one end and provided with an extended attaching lip or tang 5, preferably offset from the plane of the base, and having a hole 6 for connection with the knotted end of the rope or cord 7, as indicated at 8.

The holding dog, as shown in Figs. 1 and 2, is preferably formed of one piece of sheet or plate metal, bent to provide a gripping body portion 9 made by doubling the blank upon itself as shown. I thus provide a curved gripping face 10 preferably corrugated or toothed as shown, consisting of a cross connecting member 11 between the back 12 and the front 13. At their inner portions these parts are bent toward each other as shown, front 13 continuing angularly across by portion 14 and merging into the flat pivoting terminal 15, while back 12 is brought by angular extension 16 into abutting contact with the rear face of portion 14 thereby strongly bracing the dog, and providing for ample width of its clamping face 10.

i :Theend pivoted a rivet 17 to the upper end of back 2, and is free to swing thereon. Curv'edfacc 10 is cam-like in form and developed eccentrically with relation to pivotal bearing 16 so that the tension of the cord at in the direction of the arrow, will tend to bind the dog tightly against the cord, and toward base 3, in proportion to the strain. The dog may be released by reversing the strain on the cord and lifting the dog clear, as will be understood. Lip 4 serves to retain the cord, strap, or other element in place between the face of the dog and of base 3, and when one end of the cord is attached to tang 5 and the cord is passed around any article to be engaged and then gripped by its free portion by the dog, the device will operate to hold it fixedly until released.

If desired, the connected end of the cord may be attached to one corner of a rectan lar plate or back 2 which is provided wlth an extension and turned over into aconiform socket 6*- adapted to receive the knotted end 8 of the cord as shown in Fig. 3. The back 2 is provided with a'base 3 and a flange or lip P providing for the reception and retaining of the cord between it and the curved toothed face 10 of dog 9*.

Said dog, which may be of the same construction as that above described, or of the single thickness form shown in Figs. 3 and 4:, is pivoted to back 2 at 16 and is adapted to operate in substantially the same manner as to the other form.

The advantage in making the back substantially square as shown, is that the cord may thus lead off from diagonally opposite corners, as shown, so that the device is particularly adapted to the tying of packages. In such case the cord is passed in the usual way around the package and the clamping device is located at the middle, where the usual intersection of the cord occurs, and the cord then tightened.

One feature of advantage is that the square area of the device, on its obverse side, may be utilized for the application of any suitable advertising matter, so that the usefulness of the invention is extended. It may be used any number of times, and will be found to be especially efficient, particularly for light articles and small size cords. What I claim is A clamping device consisting of a frame retaining flange, an extended socket portion 7 adapted to engage the knotted end of a cord,

and a gripping dog pivoted to the frame formed of plate metal bent to provide a double sided spaced apart gripping portion 7 having a terminal curved eccentric face connecting the side portions said side portions 10 having angularly arranged portions in abutting and bracing engagement; oneof'said portions being extended to provide a piv'0t ing terminal, substantially as set forth.

'.';In testimony whereof I hereunto aflix my 15 signature.

I LIA A. RICHARDSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner, of Patents,

I Y Washington, D, 0 i 

